Window-lock



Patented Nov. 8, 1921.

infn/Ma:

UNITED STATES CHRISTIAN E. BARBIER, OF CHICAGO, ILLINOIS.

WINDOW-LOCK.

Application filed. September 28, 1918.

To all whom it may concern.:

Be it lrnown that I, CHRISTIAN E. BAR- Brnn, a citizen of the United States, and a resident of the city of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in IVindow-Locks, of which lthe following is a specification. 1

My invention relates to improvements in window locks and has for its object the production of a device of this character which will be of durable and economical construction and efficient in use.

Other objects will appear hereinafter.

The invention consists in the combinations and arrangements of parts hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawings forming a part of this specification, and in which,

Figure l, is a fragmental perspective view of the meeting ends of two conventional window sashes to which is applied a lock embodying the invention,

Fig. 9., a transverse section through the window sashes as seen in Fig. l, and

Fig. 3, a perspective view of the lock detached.

The preferred form of construction as illustrated in the drawings comprises a stop et formed of a single piece or strip of rc silient material, said stop being secured to the upper sash 5 of the window. Said stop is arranged at the inner side of the sash 5 above the lower edge thereof, the same being secured in position by means of a screw 6 having a square head with which a square opening 7 in said stop frictionally engages. The arrangement is such, as will be seen, that said stop is frictionally secured to the sash, permit-ting of ready and expeditious removal thereof when desired in order to allow uninterrupted sliding of the sashes to full open position.

Stop d is so formed that only the ends thereof contact with the sash 5, the central portion of said stop being bellied outwardly for engagement with the adjacent edge of the lower sash 8, when the latter is slid upwardly or the upper sash is slid downwardly, said stop thus constituting a means of limiting relative sliding movement of the sashes and thus serving as a lock inasmuch as the Specification of Letters Patent.

Patented Nov. 8, 1921.

Serial No. 256,133.

degree of sliding movement permitted not being suiiicient to allow for the passage of a person through the window. The arrangement is suoli that the window sashes may be open only to such an extent as to allow fory ventilation of the room. The outward bellying of the stop results in an inclined surface for engagement with the lower sash7 thus constituting the stop a sort of wedge which renders the device not only serviceable as a stop, but also as a means of holding the sashes against transverse shifting, thus eliminating rattling of the sashes.

wWhile I have illustrated and described the preferred form of construction for carrying my invention into effect, this is capable of variation and modification without departmg from the spirit of the invention. I, therefore, do not wish to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claim.

Having described my invention, what I claim as new and desire to secure by Letters Patent is The combination with a pair of slidably mounted window sashes, of a stop interposed between said sashes, the same being carried by one of said sashes and adapted for engagement by the other to lock said sashes against relative movement, said stop being formed of a single piece of metal having its ends positioned in the same plane and contacting with the sash carrying the stop, the central portion of said stop being bowed outwardly from the sash carrying the same for engagement with the other sash; means for detachably securing the said stop to the first mentioned sash comprising a square projection on said sash; and an opening of corresponding shape in one end of said stop snugly engaging said projection whereby said stop is locked against relative rotary movement, substantially as described.

In testimony whereof I have signed my name to this specilication in the presence of two subscribing witnesses.

CHRISTIAN E. BARBIER.

Witnesses:

JOSHUA R. I-I. Porrs, HELEN F. Linus. 

